Advertisements
Advertisements
Question
Describe the energy changes which take place in a radio.
Advertisements
Solution
A radio converts electrical energy into sound energy. In a radio set, electrical energy causes the speaker’s diaphragm to vibrate and produce sound. So, the radio converts electrical energy into kinetic energy and finally into sound energy. This energy transformation can be written as,
Electrical energy → Kinetic energy → Sound energy
APPEARS IN
RELATED QUESTIONS
Does the transfer of energy take place when you push a huge rock with all your might and fail to move it? Where is the energy you spend going?
In what way does the temperature of water at the bottom of a waterfall differ from the temperature at the top? Explain the reason.
What is the difference between potential energy and kinetic energy?
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :
Name the device or machine which convert :
Electrical energy into heat energy.
Name the device or machine which convert :
Chemical energy into kinetic energy (or mechanical energy).
Name the device or machine which convert :
Chemical energy into heat energy.
A bulb lights up when connected to a battery. State the energy change which takes place :
Name the energy transfers which occur when :
an electric ball rings
Name the energy transfers which occur when :
someone speaks into a microphone
